"I've replaced the washers, changed the tap assembly on the top, and
reseating tool. However there is a small hole in the seat of this 50
year old bathroom tap
that means it will leak forever. This is for an elderly relative &
water bills are going thu the roof. Can I use plaster of paris or
similar to shut thing off until they can
afford a new vanity unit? "
Plaster of paris to fix a valve seat? Why not try bubble gum too?
Geez, you can get a whole new cheapo faucet for under $30 at the home